John Day Screen and Passage Program: Current Issues

1. John Day Screen and Passage Program: Current Issues Presented by Michael Jensen John Day Shop Manager

2. Program Overview • New Project Funding • ODFW Cost Share • BPA • At least 20 projects per year • Maintenance • Fishing License Surcharge • Mitchell Act (NOAA) • Over 300 screen sites in Anadromous • Over 45 passage structures in Anadromous • Over 200 pump screen sites in Anadromous • Over 60 screen, passage and pump screen sites in Non-Anadromous

3. Area of responsibility

4. Presentation Topics • Intralox/Hydrolox Drum • Belt Screen Self – Adjusters • Orifice Boards • Solar Panels

5. Intralox/Hydrolox Drum • We have several sites that have excessive hard water • West Branch Bridge Creek near Mitchell, Oregon – 4’x24” solar drum • Originally installed in 2000 • Rotary brush installed in 2010 for additional cleaning • Hard water deposits were still occurring • Hydrolox belt material installed as alternative to Stainless Steel Perforated Plate on June 5th, 2013

6. Screen as of 2010

8. The Problem!

9. New screen material

10. Conclusions • Perforated Plate – 33% open area • Last purchase of 4 foot wide SS Perforated plate was $37.52 per foot • 80 inches used equals $250.13 • Intralox/ Hydrolox material – 32% open area • On a 4 foot wide screen, this equals $116.14 per foot • 93 inches used equals $900.08 • Based on angle between modules and curvature of drum, would not recommend Intralox/Hydrolox material on anything smaller than an 18 inch diameter drum (seal issues)

11. Current status • As of August 19th, 2013:

12. belt Self - adjusters • Background • In conjunction with the use of Intralox/Hydrolox belt material (on belt screens), John Day uses a solid steel roller on bottom • Advantages: • Reduces construction costs • For a three foot belt: Cost of three foot roller ≈ $400, Cost of three foot Intralox shaft, sprockets, and collars ≈ $700 • Reduces tracking issues • Disadvantages (at least what we think): • Material deposition between belt and roller • The Problem • As material builds up, only way for belt material to adjust is to break • Solution • Spring operated self-adjusters • Testing • One site converted from wiper to a series of belt screens in July 2013

18. Orifice boards • Background • Water becomes more scarce as irrigation season progresses • Most sites, water right is cut in half after June 1st in the John Day Basin • The Problem • Difficult to design a screen that can fit a wide range of irrigation flows • Paddlewheel driven rotary drums have always been the initial consideration for all sites • The current 16 blade paddlewheel is very safe (for employees), but will not operate under all water flow conditions • Where a paddlewheel driven rotary drum won’t work, utilize solar • Solar is more expensive • One Solution • Orifice Boards • Can be made out of any size PVC pipe • Cutting the pipe to a length where it ends near the paddlewheel blade is more important than the size of pipe

22. Solar panels • Background • Use of solar at sites that have extreme ranges in water use • Typically dictated by the low end of water use where a paddlewheel won’t work • John Day design calls for 24 volt solar system • In 2009, a 50 Watt, 12 volt Panel cost around $300 • To conserve money, it was determined that two, 50 watt panels wired in series (voltage doubles to 24 volt) was the minimum on our screen projects • With two 100 amp/hour batteries, and the two 50 watt panels, expected to last for three consecutive cloudy days • Amperage output was around 2.5 amps for the combined array • Total cost for both panels equaled $600 (complete solar unit between $2,000 and $2,500) • Today, I could purchase a 230 Watt, 24 volt Panel for $175 • Voltage is already at the amount we need for our systems • Amperage output for this size of panel is almost 8 amps (over three times the output) • Savings of $400